Yersinia pestis
Definition: a bacterial species causing plague in humans, rodents, and many other mammalian species and transmitted from rat to rat and from rat to humans by the rat flea, Xenopsylla; it is the type species of the genus Yersinia.
Synonym(s): Kitasato bacillus, Pasteurella pestis, plague bacillus
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Examples: glitazone, GI cocktail, etc.

